Can High Convection Volumes be Achieved in Each Patient During Online Post-dilution Hemodiafiltration?

"First, patients actually receiving standard dialysis will be switched to post-dilution HDF.~Then, a stepwise increase in 3 key parameters of the HDF prescription will be applied in a standardized way, in order to obtain the highest achievable convection volume.~Precisely, the following 3 parameters will successively be increased towards a maximal target:~1. Treatment time (up to 4 hours per session);~2. Blood flow rate (up to 400 mL/min;~3. Filtration fraction, defined as the ratio between extracted plasma water flow rate and blood flow rate (up to 33%).~Maximal values for these parameters will be those achieved within pre-specified safety limits."